Exchange rate of the US dollar against the Kuwaiti dinar was up to KD 0.283, the euro dropped to KD 0.370 compared to last Thursday\'s figures, said the Central Bank of Kuwait (CBK) on Wednesday.  The exchange rate of the sterling was down to KD 0.428, the Japanese yen remained unchanged at KD 0.003, and the Swiss franc down to KD 0.303.